CVE-2020-4039

Name: CVE-2020-4039
Creator: NVD / NIST
Published: 2021-04-30T16:15:07.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.37%

Last modified Jun 17, 2026

CVE-2020-4039 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. SUSI.AI is an intelligent Open Source personal assistant. SUSI.AI Server before version d27ed0f has a directory traversal vulnerability due to insufficient input validation. EPSS estimates a 1.37% chance of exploitation in the next 30 days.

Description

SUSI.AI is an intelligent Open Source personal assistant. SUSI.AI Server before version d27ed0f has a directory traversal vulnerability due to insufficient input validation. Any admin config and file readable by the app can be retrieved by the attacker. Furthermore, some files can also be moved or deleted.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

1.37%

68.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fossasia	Susi.Ai	< 2020-05-13

References

https://github.com/fossasia/susi_server/security/advisories/GHSA-wcm4-2jp5-q269Patch, Third Party Advisory
https://github.com/fossasia/susi_server/security/advisories/GHSA-wcm4-2jp5-q269Patch, Third Party Advisory

Timeline

Published: Apr 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4039?

How severe is CVE-2020-4039?

CVE-2020-4039 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.37% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4039?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-4039?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST